Our 9750 control unit's display is showing 8 squares instead of its usual display (date and time I think). There's no fault (red spanner) light showing.
Is it stuffed? I'm a bit apprehensive about trying to input the user or engineer codes in case the alarm goes of.
Any help would be much...
Hello,
I'm new to the forum so please bear with me...
We inherited a Cooper Menvier alarm system with our house, together with some associated documentation for the components including the 9750 control and 9955 radio expander (RFX) receiving from a single 715r transmitter in the garage (Zone...